Turnbull co-founded the Australian Republican Movement, which is currently pushing for a 2020 advisory ballot to determine whether Aussies want an Australian head of state and how they should be chosen.

While he wouldn’t reveal what they spoke about, he said that meeting her was “an honour”.

“I obviously look forward to her advice and wisdom,” he said.

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“She’s after all known and advised many, many prime ministers.”

Turnbull’s visit to Buckingham Palace comes as the last event in his week-long trip to Germany, France and England, following the G20 summit in Hamburg where he had a rocky time.

On the Friday morning of the controversial event, protestors dressed all in black rushed towards the entrance of the luxury Park Hyatt hotel in Hamburg where Turnbull was staying (along with Vladimir Putin), sparking a security scare.